linux-kernel - [PATCH net-next v2] net: phy: aquantia: fix return value check in aqr107_config

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Message-ID: <f8282e2fc6a5ac91fe91491edc7f1ca8f4a65a0d.1728825323.git.daniel@makrotopia.org>
Date: Sun, 13 Oct 2024 14:16:44 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Jon Hunter <jonathanh@...dia.com>, Hans-Frieder Vogt <hfdevel@....net>,
	Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Christian Marangi <ansuelsmth@...il.com>,
	Russell King <rmk+kernel@...linux.org.uk>,
	Daniel Golle <daniel@...rotopia.org>,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	Abhishek Chauhan <quic_abchauha@...cinc.com>,
	Robert Marko <robimarko@...il.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2] net: phy: aquantia: fix return value check in
 aqr107_config_mdi()

of_property_read_u32() returns -EINVAL in case the property cannot be
found rather than -ENOENT. Fix the check to not abort probing in case
of the property being missing, and also in case CONFIG_OF is not set
which will result in -ENOSYS.

Fixes: a2e1ba275eae ("net: phy: aquantia: allow forcing order of MDI pairs")
Reported-by: Jon Hunter <jonathanh@...dia.com>
Closes: https://lore.kernel.org/all/114b4c03-5d16-42ed-945d-cf78eabea12b@nvidia.com/
Suggested-by: Hans-Frieder Vogt <hfdevel@....net>
Signed-off-by: Daniel Golle <daniel@...rotopia.org>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
---
 drivers/net/phy/aquantia/aquantia_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/phy/aquantia/aquantia_main.c b/drivers/net/phy/aquantia/aquantia_main.c
index 4fe757cd7dc7..7d27f080a343 100644
--- a/drivers/net/phy/aquantia/aquantia_main.c
+++ b/drivers/net/phy/aquantia/aquantia_main.c
@@ -513,7 +513,7 @@ static int aqr107_config_mdi(struct phy_device *phydev)
 	ret = of_property_read_u32(np, "marvell,mdi-cfg-order", &mdi_conf);
 
 	/* Do nothing in case property "marvell,mdi-cfg-order" is not present */
-	if (ret == -ENOENT)
+	if (ret == -EINVAL || ret == -ENOSYS)
 		return 0;
 
 	if (ret)
-- 
2.47.0